Characteristics of large active area, phase-only spatial light modulator with dielectric mirror

Hiroshi Tanaka; Yu Takiguchi; Tsubasa Watanabe; Naoaki Kato; Keisuke Uchida; Munenori Takumi; Tomoko Otsu-Hyodo; Kazuhiro Nakamura; Hiroaki Ishii; Atsushi Ihori; Yoshiki Akizawa; Hirokazu Asaine; Mikio Nagata; Yoshiyuki Ohtake; Haruyoshi Toyoda

doi:10.1117/12.2649460

14 March 2023 Characteristics of large active area, phase-only spatial light modulator with dielectric mirror

Hiroshi Tanaka, Yu Takiguchi, Tsubasa Watanabe, Naoaki Kato, Keisuke Uchida, Munenori Takumi, Tomoko Otsu-Hyodo, Kazuhiro Nakamura, Hiroaki Ishii, Atsushi Ihori, Yoshiki Akizawa, Hirokazu Asaine, Mikio Nagata, Yoshiyuki Ohtake, Haruyoshi Toyoda

Author Affiliations +

Proceedings Volume 12442, Emerging Liquid Crystal Technologies XVIII; 124420D (2023) https://doi.org/10.1117/12.2649460
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

We developed a liquid-crystal spatial light modulator having a 30 mm active area and a multilayered dielectric mirror for industrial infrared lasers to establish an innovative manufacturing and fabrication technique in the smart-manufacturing post-pandemic era. The reconstruction of computer-generated holograms was achieved to demonstrate the concept of this device in the IR region. The incident phase performance characteristics of this device under high-power laser irradiation were obtained using a 1030 nm ultrashort pulse laser. The work presented here will accelerate the use of liquid-crystal SLMs in high-precision laser processing of the process-resistant materials and high-throughput processing for additive manufacturing.

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Hiroshi Tanaka, Yu Takiguchi, Tsubasa Watanabe, Naoaki Kato, Keisuke Uchida, Munenori Takumi, Tomoko Otsu-Hyodo, Kazuhiro Nakamura, Hiroaki Ishii, Atsushi Ihori, Yoshiki Akizawa, Hirokazu Asaine, Mikio Nagata, Yoshiyuki Ohtake, and Haruyoshi Toyoda "Characteristics of large active area, phase-only spatial light modulator with dielectric mirror", Proc. SPIE 12442, Emerging Liquid Crystal Technologies XVIII, 124420D (14 March 2023); https://doi.org/10.1117/12.2649460

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